OVE EN 50131-2-4-2021 Alarm systems - Intrusion and hold-up systems - Part 2-4: Requirements for combined passive infrared and microwave detectors (german version)
OEVE/OENORM EN 50131-2-4-2008-12OVE EN 50131-2-4-2019-08
OVE EN 50131-2-4-2021 history
2021OVE EN 50131-2-4-2021 Alarm systems - Intrusion and hold-up systems - Part 2-4: Requirements for combined passive infrared and microwave detectors (german version)